This is an open-label, Phase 1, dose exploration and preliminary immunogenicity study of single agent EGFR(V)-EDV-Dox in subjects with recurrent glioblastoma (GBM). Eligible subjects enrolled in the study will receive EGFR(V)-EDV-Dox administered weekly for 7 weeks via IV 20 minute infusion, followed by radiological evaluation at week 8 (1 Cycle). Subjects may continue to receive subsequent cycles of EGFR(V)-EDV-Dox unless the subject becomes intolerant to investigational product (IP), withdraw consent or the individual is no longer receiving clinical benefit (factors taken in to consideration will be disease progression radiologically or clinically, and clinical benefits to quality of life). Tumour assessment will be repeated after each 7 week cycle (week 8).